ASTROSAT CZTI

Data Quality Report

Orbit 58976

Creation date: 2026-08-22T09:10:53.806189
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_004T07_9000006598_58976cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58976cztM0_level2_quad_clean.evt
Size (bytes)675,734,40098,144,640
Size644.4 MB 93.6 MB
Events in quadrant A6,183,866656,707
Events in quadrant B6,706,441627,010
Events in quadrant C4,334,827634,753
Events in quadrant D7,260,010576,951

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230472
B0244914
C0176142
D0264572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68314636.777924%
B6831125918.430684%
C68313404.977309%
D68315738.388230%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 9021 6833 287 287 3.18% 4.20%
B 9021 6833 886 886 9.82% 12.97%
C 9021 6833 267 267 2.96% 3.91%
D 9021 6833 463 463 5.13% 6.78%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 3 14 2662348 14374.85 753 736 185.2
A 14 238 529808 2857.42 753 736 185.2
A 3 94 21941 114.52 753 736 185.2
B 6 255 1742037 11564.05 705 680 150.6
B 2 247 949104 6298.32 705 680 150.6
B 4 236 373559 2476.22 705 680 150.6
C 14 254 948933 4667.05 736 728 203.2
C 3 233 243183 1193.36 736 728 203.2
C 2 255 96658 472.16 736 728 203.2
D 12 110 3385124 16383.77 721 688 206.6
D 12 1 293377 1416.88 721 688 206.6
D 6 239 222067 1071.67 721 688 206.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter

TCT plots

Parameter TCT0 TCT_healed
Tct